06detroitgxp

I'm sure it has been talked about before but just contimplating on buying the magnaflow catback but want to know if it's worth the money or if I could get the same results with flowmaster universals and deleting the resenator for alot cheaper.

Corny40

iTrader: (7)

Save your money.

https://ls1tech.com/forums/ls4-front...ut-56k-no.html

LS4SPEED

iTrader: (3)

MagnaFlow quality is superb, I debated about going with the MagnaFlow or SLP catback. I wanted something throaty when I got on it but quiet when I was cruising. All with no raspy noise when you let off the go peddle. That's the main reason I didn't go SLP, I've heard them before and they are a little louder than I wanted. I also thought about going with just mufflers to keep the cost down a bit. I ultimately decided against that, mainly because I didn't want the connections to rust. Plus the MagnaFlow is all 2.5" mandrel bent tubing. I also got a pretty good deal - think, I paid $540.60 delivered from wundercarparts.com they provided excellent customer service and extremely fast shipping, I got the exhaust 2 days after I ordered, I placed my order at like 9 PM and the box arrived by 11 AM two days later! Now that's fast! Hope this helped, and good luck with your decision.

SILVER LS4

You could get unuversal magnaflow mufflers and delete the resonator also. This would also save you $$. Remember, the quickest all motor ls4 had the stock cat back. So, just get on you tube and find a good sounding muffler and get a couple and replace the stock mufflers with them and delete the resonator.

06MonteSS

yeah, keep all the stock pipe and just replace the mufflers...

here's mine with flowmaster super 40's....

http://www.eprowebdesigns.com/06Mont.../06MonteSS.avi

06detroitgxp

Do you have a part number or muffler dimensions? Sound good man

06MonteSS

flowmaster part #952446

2.25" offset in, center out...

1BADCTS

iTrader: (17)

I think that the Magnaflow kit is a good compromise between good sound without resonance/drone. From the very few LS4's I've heard, I've yet to hear another setup without at least some drone.. but I still think most of that is due to the DoD mode.

06detroitgxp

Do you know if Flowmaster Part # 942446 will fit. It's the super 44. its measured different than the super 40

LS4SPEED

iTrader: (3)

Just as long as its off set in center out it will fit, although you might need more tail pipe for the tips to be in the right position.

06MonteSS

yeah, as long as it's still 2.25" offset in and center out, it will fit...

and yeah, you will need extra tail pipe welded on for the tips to be brought out to the cutouts in the rear fascia... needed to do that with the super 40's too...

mp4life23

When I get my car out of the shop up to ( $9625.00 of damage) ill post a video of the Borlas. A little more $ but man do they sound good

SILVER LS4

If I had to do it all over again, I would seriously consider installing this muffler in place of the resonator and eliminating the rear mufflers.

http://www.magnaflow.com/02product/s...e=main&id=7755

GXPolice

iTrader: (1)

I went with the Magnaflow's because the cat-back was designed especially for our cars and it was pretty easy to install (no welding, cutting, etc.). If i wanted a more custom exhaust then you have more choices with Flowmaster and go from there. And I agree with LS4Speed, i got my Mag from wundercarparts, picked it up for $476 at one of their warehouse locations, good people there.

speedshifter

iTrader: (1)

Where are you guys seeing this for so cheap? I'm only finding it for $660-700.

GXPolice

iTrader: (1)

I was told by someone that Magnaflow does not allow vendors to advertise below their suggested price, i dont know if thats true or not but instead of just ordering i would recommend calling and seeing if they have a better price then the advertised one. I emailed a few places and found it for $476 at wundercarparts...email or call them if you're interested (mention Chris) and i'm sure they'll be able to work out a price comparable to mine, but keep in mind I picked mine up and didn't have it shipped.

LS4SPEED

iTrader: (3)

Call and ask for Brad, I actually spoke to him at home with his kids screaming in the back ground! He was awesome to work with. Ask him for his best price, all he can say is no.

speedshifter

iTrader: (1)

Cool guys, I appreciate the info! Can't quite afford the cat-back right now anyways, but I bookmarked this page so when I can, I'll get in touch with the right people.

LS4SPEED

iTrader: (3)

http://cgi.ebay.com/ebaymotors/Perfo...3A1|240%3A1318

this is the magaflow exhaust!

oshia86

The exhaust i had on my GXP was a 3" with a Bagnaflow straight through on the straight section of pipe y'ed into dual 2.5" pipes back into Borla tips. Odd as it might seem, the Borla tips made a world of difference in the volume. I had the stock tips on this setup for a while and it was rather mellow, although more aggressive and louder than the Magnaflow catback. I added the new tips and it all came to life (the Borla tips having a 2.5" inlet). I've heard the magnaflow catback in person and it just kinda sounded weaksauce to me so i went custom. I had the whole thing done for under $600. Heres a link to a vid.

EDIT: Also consider i had the K&N intake and the car was tuned as well.


http://www.youtube.com/watch?v=kDyRyCRFVGw